Description or Example
# 核心代码
```java
@GetMapping("/checkItem")
public String changeChecked(@RequestParam Long skuId, @RequestParam Integer checked) {
cartService.changeChecked(skuId, checked);
return "redirect:http://cart.bitmall.com/cart.html";
}
```
```java
@Override
public void changeChecked(Long skuId, Integer checked) {
BoundHashOperations<String, Object, Object> hashHandle = getHashHandle();
String cartItemJson = (String) hashHandle.get(skuId.toString());
CartItemVO cartItemVO = JSON.parseObject(cartItemJson, CartItemVO.class);
hashHandle.put(skuId.toString(), JSON.toJSONString(cartItemVO.setCheck(checked == 1)));
}
```